Follow below steps for Java Script Error:

Step 1: Win+R (run command) > (%temp%) delete all temp files.

Step 2: Run application as Administrator.

Step 3: Re-install the Desktop application and then try to run the app.

Step 4: Exclude Biz Analyst  Desktop App from Antivirus and Firewall.

Step 5: Check the path mentioned in the Javascript error and rename the folder that is mentioned.